43 Light Anti-Aircraft Regiment RA (TA) was formed in London from two batteries of 16 LAA Regiment, in November 1939. It served in 5 Anti-Aircraft Division before moving abroad. The Regiment moved to Ceylon (Sri Lanka) in March 1942. 43 Light Anti-Aircraft Regiment RA (TA) was disbanded in Ceylon in March 1945.
Illustrations of the formation badges under which a unit served or supported are given. This is no guarantee that the unit used this formations badge.
| Nov 39 | Formed from batteries from 16 Light Anti-Aircraft | London, UK | |
| Nov 39 |  |
5 Anti-Aircraft Division, 65 Anti-Aircraft Brigade | Southampton, Hampshire, UK |
| Mar 42 |  |
Ceylon Command, 23 Anti-Aircraft Brigade | Colombo, Ceylon (Sri Lanka) |
| Sep 43 | |
Ceylon Command, 24 Anti-Aircraft Brigade | Ceylon (Sri Lanka) |
| Mar 45 | Disbanded | Ceylon (Sri Lanka) |
Batteries
| Nov 39 | 147, 148 |
| Dec 40 | 147, 148, 198 |
| Sep 41 | 147, 148, 264 |
| Nov 41 | 147, 148, 264, 298 |
| Feb 42 | 147, 148, 264 |